Coffee (Dry Instant Powder) (1 Teaspoon, Dry)

Avoid eating instant coffee powder dry; dissolve a measured serving in water and drink it slowly instead.

Choose plain, unsweetened instant coffee with an ingredient list containing only coffee; avoid mixes with sugar, maltodextrin, creamer, or flavored powders.

Have coffee with or after a balanced meal rather than on an empty stomach, especially if you notice caffeine raises your readings.

Pair coffee with protein and fat, such as eggs, plain Greek yogurt, nuts, or cheese, instead of having it alone.

Reduce the dose or switch to half-caffeinated/decaffeinated coffee, then compare your glucose response on separate days.

Keep the timing, serving size, sleep, and activity similar when testing; caffeine-related rises can be stronger after poor sleep or during stress.